Azithromycin side effects in dogs

62 reports sent to the FDA between 2011 and 2026 involve Azithromycin in dogs. The most reported problems were vomiting, loss of appetite, lethargy. 50% were marked serious.

62Reports
50%Marked serious
1.6%Only medicine involved
16%Recovered
18%Died or euthanised
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

About this medicine

Type: medicine.

Most reported side effects

21 34%
Loss of appetite
16 26%
Lethargy
14 23%
Papilloma
9 15%
Liver problems
9 15%
Kidney problems
8 13%
Diarrhea
7 11%
Seizures
5 8.1%
Itching
5 8.1%
Proteinuria
5 8.1%
Infectious disease
5 8.1%
Abnormal radiograph finding
4 6.5%
Swelling
4 6.5%
Wobbliness (ataxia)
4 6.5%
Respiratory tract disorder
4 6.5%

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.

Didn't work as expected
9 15%
Didn't prevent heartworm
6 9.7%
Didn't stop worms
1 1.6%

How soon problems started

Same day
6 13%
1–2 days
7 15%
3–7 days
3 6.3%
1–4 weeks
14 29%
Over a month
18 38%

Time from the first dose to the first sign, where both dates were reported (48 reports).

How the animals did

Recovered
9 15%
Recovered with lasting effects
1 1.6%
Still unwell when reported
22 35%
Died
5 8.1%
Euthanised
6 9.7%
Not known
19 31%

Breeds named most often

Popular breeds appear more often because there are more of them.

Other medicines for dogs